Definition of "residua" [residua]

• Plural of residuum. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "It has long been suspected that there are underground tunnels and caverns on the moon, presumably the residua of lava tubes."
• "But “convulsive” epileptic events are not over in “a few seconds” without any residua."
• "Animal behaviourists often note similarities in behaviour between humans and other mammals, there has to be some evolutionary residua that remains from our past."